Question

Problem 2

A carrier wave is FM using a sinusoidal signal of frequency fm and amplitude Am. a. Determine the values of the modulation index ß for which the carrier component of the FM wave is reduced to zero. (You may use the table or Matlab.) b. In a certain experiment conducted with fm = 1 kHz and increasing Am (starting from zero volt), it is found that the carrier component of the FM wave is reduced to zero for the first time when Am = 2 volts. What is the frequency sensitivity of the modulator? What is the value of Am for which the carrier component is reduced to zero for the second time?

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